RGB LED Strips - Adafruit Industries Download PDF Epub

Analog type RGB LED strips come on a reel, and are made of 3-LED sections that are 10 cm long. ... This diagram shows connecting up with power NPN transistors such as TIP120, where Base is pin 1, Collector is pin 2 and Emitter is pin 3. . Just like with wiring to an Arduino you need to use transistors to buffer and control the higher current .